The Leland Replacement Water-Activated Bobbins 3-Pack is designed for use with inflatable life jackets and vests using Halkey Roberts auto and auto/manual inflators V85000, V86000, V90000, or V95000. The bobbins do not constitute a complete rearming kit but work as a substitute if the bobbin on your life jacket or in your kit is damaged. Be sure to check your life jacket and inflation system to match the products needed. Using the wrong components can be dangerous on the water.• Replacement bobbin for inflatable life jackets and vests using Halkey Roberts Auto and Auto/Manual Inflators: V85000, V86000, V90000, and V95000.• Bobbins are good for five years from the manufacturer's date• It is recommended to change the recreational use of bobbins every 3 years.• Includes 3 bobbins. Good for 5 years from manufacturer's date Recommended to change the recreational use of bobbins every 3 years | Leland Replacement Water-Activated Bobbins for Inflatable Life Jackets, 3-Pack